[hkdonoldys]

My 383 stroker is officially up and running. I am now ready to start fine tunning. What initial timing should I run and what advanced. I am running at 9.5 to 1 compression, an HEI with vacuum advance, a Holley 670 street avenger and a Muncie M21 4sd. Any other info?
My manule says 8 deg b for a stock 350. Will this still be ok for this motor? I am also at 5300 ft elivation.
Thanks for your help.
Mark

 

[hkdonoldys]

I think I finally found the info I was looking for in the back archives

 

[6NOVA4]

I'd put as much initial timing as you can without causing the starter "grunt" when cranking. Also total timing should be around 32-36* by 3,000. run what you can without pinging.

I don't know about high elevations but at sea level here in nor cal I ran 12-14* initial and 32-36* at 3,000 on my 383 in my pickup. I also used a adjustable vacuum advance unit set for 12-14* at cruise on top of the 32-36* advance.